Should plans continue unchanged, this would be the first use of turbocharged engines since the infamous IRL/CART split of 1994.; Although CART (and its successor, Champ Car) continued to use turbos through its demise in 2007, the IRL switched in 1997 to normally aspirated V-8s.
Although the exact specifications are yet to be drawn, the new engines could be either four- or six-cylinder blocks with a single- or twin-turbocharger setup.; Either way, the IRL is hoping to see power; increase to approximately 750 hp.
Officials also hope the new engine specs will attract more manufacturers, moving the IRL away from an all-Honda series.; Although Honda has expressed interest in the new regulations, Brian Barnhart, president of the IRL, claims another two or three companies are considering joining the field.
Source: Indianapolis Star